XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 911
in the same range (7.05%) due to the existence of the unde-
tected iron bearing gangue minerals in the ore body.
Particle Size Distribution Estimation
Particle Size Distribution (PSD) algorithm was developed
by training a ML algorithm to identify the particle bound-
aries and calculate the surface area b counting the number
of pixels in the particles image. Measuring P80 was difficult
as the larger particles often lie on the boundaries of field of
view of the digital microscope (472 µm × 266 µm) so P50
measurement was used for the comparison instead. In hind-
sight, the magnification could be reduced combined with
a higher resolution to yield a field of view of several times
the largest particle. A total of 100 images were collected to
Figure 7. Conversion of images to modal mineralogy by size
Figure 8. Elemental assays calculated from MinDet reading of 20 images versus ICP-MS results (Koh et al., 2024)
in the same range (7.05%) due to the existence of the unde-
tected iron bearing gangue minerals in the ore body.
Particle Size Distribution Estimation
Particle Size Distribution (PSD) algorithm was developed
by training a ML algorithm to identify the particle bound-
aries and calculate the surface area b counting the number
of pixels in the particles image. Measuring P80 was difficult
as the larger particles often lie on the boundaries of field of
view of the digital microscope (472 µm × 266 µm) so P50
measurement was used for the comparison instead. In hind-
sight, the magnification could be reduced combined with
a higher resolution to yield a field of view of several times
the largest particle. A total of 100 images were collected to
Figure 7. Conversion of images to modal mineralogy by size
Figure 8. Elemental assays calculated from MinDet reading of 20 images versus ICP-MS results (Koh et al., 2024)